Underground diaphragm wall grooving construction method

Abstract

The invention discloses an underground diaphragm wall grooving construction method. The method comprises the following steps: dividing a to-be-excavated ground into a plurality of box cut sections according to a design specification of an underground diaphragm wall and marking a plurality of to-be-drilled drilling positions on each section; preparing mud used for drilling; moving a rotary drillingrig to the to-be-excavated ground and adjusting the rotary drilling rig to a working state, and aligning the drill of the rotary drilling rig to the center of one drilling position; starting the rotary drilling rig, wherein the drilling operation is carried out progressively in the drilling position and the progressive depth every time is 2-2.5m; and when the drilling operations in the first stage of all drilling positions of the section are finished by adopting a drilling selective method, grabbing residual earth and stones among the drill holes by using a hydraulic grab bucket to form a first groove body, and then entering the drilling operation in the next stage and so on till the designed depths of the drill holes are reached. The underground diaphragm wall grooving construction method disclosed by the invention improves the drilling efficiency and the drilling precision.

Description

technical field [0001] The invention relates to a construction method of an underground diaphragm wall, more specifically a construction method for forming grooves in an underground diaphragm wall. Background technique [0002] At present, percussion drills are mostly used for hole-forming construction of underground diaphragm walls, which not only has low hole-forming efficiency, but also for some complicated geological conditions, especially soft rock, not only the construction is slow, but also the quality of hole-forming is relatively low. Difference. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a construction method for forming grooves in an underground continuous wall. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: a construction method for forming grooves in an underground diaphragm wall, said method comprising: ...

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Problems solved by technology

[0002] At present, percussion drills are mostly used for hole-forming construction of underground diaphragm walls, which not only has low hole-forming efficiency, but also for some complicated geological conditions, especially soft rock, not only the construction is slow, but also the quality of hole-forming is relatively low. Difference

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